f/overrides/event-backup/driix-dividend.csv
Greg Pomerantz bb8e39605e Event-history protection: backup dir, empty-download fallback, docs
Yahoo's 2026 event-feed change (capitalGain events dropped for some
funds; no events at all for terminated tickers) can wipe good event
history on re-download. Defense in depth:

- overrides/event-backup/: last-known-good copy of every dividend/
  capitalGain file (8,192 files, 58 MB); refresh with
  scripts/backup_events.py after each dump update
- data.py event_file(): frozen > data-root (while populated) > backup;
  used by panel reads, verify_official, and the double-listing scanner
- README: capital-gain files are mutual-fund-only in this dump; Yahoo
  has no LT/ST split (tax.py taxes capg at lt_rate; the per-fund split
  would come from fund-company annual tax statements or commercial feeds)
- tests: exact Timestamp .loc keys (pandas 3.x string matching returns a
  Series on large DatetimeIndex)
2026-08-31 21:59:25 -04:00

855 B

1DateDividends
22019-12-170.111000
32022-12-140.372000
42026-03-300.057000
52023-09-280.094000
62023-12-130.352000
72024-03-270.039000
82024-09-270.120000
92017-06-290.074000
102021-03-300.038000
112022-09-290.078000
122017-12-150.119000
132018-12-180.098000
142021-06-290.070000
152025-06-270.129000
162016-03-300.048000
172016-06-290.069000
182017-09-280.027000
192018-03-280.018000
202023-03-300.036000
212023-06-290.085000
222020-09-290.053000
232018-09-270.062000
242019-06-270.084000
252019-09-270.064000
262024-06-270.104000
272025-03-280.048000
282016-09-290.027000
292019-03-280.038000
302020-03-300.046000
312021-12-150.235000
322022-03-300.034000
332026-06-290.162000
342015-12-160.011000
352017-03-300.035000
362021-09-290.065000
372022-06-290.077000
382024-12-130.337000
392025-09-290.123000
402025-12-150.306000
412018-06-280.077000
422020-06-290.060000
432020-12-160.277000